Package pygeodesy :: Module trf :: Class Helmert7Tuple |
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# Class Helmert7Tuple

       object --+
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            tuple --+
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       object --+   |
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     named._Named --+
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    named._NamedTuple --+
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                       Helmert7Tuple

7-Tuple `(tx, ty, tz, s, sx, sy, sz)` of Helmert transform parameters with translations `tx`, `ty` and `tz` in `millimeter`, scale `s` in `ppb` and rotations `sx`, `sy` and `sz` in `milliarcseconds`.

See Also: Datum Transform.

Instance Methods
Inherited from `named._NamedTuple`: `__delattr__`, `__getattr__`, `__repr__`, `__setattr__`, `__str__`, `dup`, `items`, `iteritems`, `iterunits`, `toRepr`, `toStr`, `toUnits`, `units` Inherited from `tuple`: `__add__`, `__contains__`, `__eq__`, `__ge__`, `__getattribute__`, `__getitem__`, `__getnewargs__`, `__getslice__`, `__gt__`, `__hash__`, `__iter__`, `__le__`, `__len__`, `__lt__`, `__mul__`, `__ne__`, `__rmul__`, `count`, `index` Inherited from `named._Named`: `__imatmul__`, `__matmul__`, `__rmatmul__`, `attrs`, `classof`, `copy`, `methodname`, `rename`, `toStr2` Inherited from `object`: `__format__`, `__init__`, `__reduce__`, `__reduce_ex__`, `__sizeof__`, `__subclasshook__`

Static Methods
a new object with type S, a subtype of T |
__new__(cls, tx, ty, tz, s, sx, sy, sz, name='') New Helmert7Tuple. |

Properties
Inherited from `named._Named`: `classname`, `classnaming`, `iteration`, `name`, `named`, `named2`, `named3`, `named4` Inherited from `object`: `__class__`

Method Details

### __new__ (cls, tx, ty, tz, s, sx, sy, sz, name='') Static Method |
New Helmert7Tuple. Arguments: `arg` - Tuple items (`tuple`, `list`, ...) or first tuple item of several more in other positional arguments. `args` - Tuple items (`any`), all positional arguments. `iteration_name` - Only keyword arguments `iteration=None` and `name=NN` are used, any other are silently ignored. Returns: a new object with type S, a subtype of T Raises: `LenError` - Unequal number of positional arguments and number of item `_Names_` or `_Units_`. `TypeError` - The `_Names_` or `_Units_` attribute is not a `tuple` of at least 2 items. `ValueError` - Item name is not a `str` or valid `identifier` or starts with `underscore`. Overrides: object.__new__